VITA Standards Update

The November VITA standards meeting was held in Miramar Beach, Florida. This update is based on the results of that meeting. Contact VITA if you are interested in participating in any of these working groups. Visit the VITA website ( for details on upcoming VITA Standards Organization (VSO) meetings.

Accredited as an American National Standards Institute (ANSI) developer and a submitter of Industry Trade Agreements to the IEC, VITA provides its members with the ability to develop and promote open technology standards. The working groups meet face-to-face every two months to address embedded bus and board industry standards issues.

VSO study and working group activities

Standards within VITA may be initiated through the formation of a study group and developed by a working group. A study group requires the sponsorship of one VITA member, and a working group requires sponsorship of at least three VITA members.

Work in progress

Several working groups have current projects underway; the following roundup summarizes those projects:

VITA 17.3: Serial Front Panel Data Port (sFPDP) Gen 3.0

Objective: The VITA 17.3 standard defines a serial connection intended for use on front panels of modules. VITA 17.3 enhances the existing ANSI/VITA 17.1 standard by adding support for higher bandwidth protocols.

Status: A draft document has been completed and is under review by the working group.

ANSI/VITA 46.0: VPX: Baseline Standard

Objective: The base standard defines physical features that enable high-speed communication in a compliant system.

Status: The baseline standard is coming up for its five-year review. The working group is working to align it with recent work on , , and . Interested parties should contact VITA to participate in the working group.

ANSI/VITA 46.9: VPX: PMC/XMC Rear I/O Fabric Signal Mapping on 3U and 6U VPX Modules

Objective: This standard defines or mezzanine rear I/O pin mappings to VITA 46.0 plug-in module backplane connectors.

Status: Various updates and additions have been added for anticipated use in VPX profiles. A recirculation ballot is scheduled to approve changes made during the first ballot.

ANSI/VITA 47: Environments, Design and Construction, Safety, and Quality for Plug-in Units

Objective: Supplying vendors’ certification of COTS plug-in units to this standard will facilitate the cost-effective integration of these items into larger systems.

Status: ANSI/VITA 47-2005 (R2007) has been opened for revision to improve interoperability, create less reliance on individual supplier ruggedization guidelines, and make sure environments are concurrent with recent VPX updates. The working group is nearing completion of reviewing comments on the revisions and additions. Participation is encouraged.

VITA 48.4: VPX REDI: Mechanical Specification Using Liquid Flow Through (LFT) Applied to VPX

Objective: This standard will establish the mechanical design requirements for an LFT-cooled electronic VPX module.

Status: The working group is reviewing and resolving comments. Vibration testing has been completed. Work on the draft document is near completion.

VITA 48.8: VPX REDI: Mechanical Standard for 3U, 6U Air Flow Through (AFT) Cooling

Objective: This document defines an AFT standard using VPX connectors without the need for retainers, using jackscrews instead of levers.

Status: ANSI/.8-2017 VPX REDI: Mechanical Standard for 3U, 6U Air Flow Through (AFT) Cooling has been ratified by ANSI. The standard is available for download by VITA members and is posted at the VITA Store for purchase by non-members.

VITA 49.2: VITA Radio Transport (VRT) Standard for Electromagnetic Spectrum: Signals and Applications

Objective: The VRT standard defines a transport-layer protocol designed to promote interoperability between radio frequency receivers and signal-processing equipment in a wide range of applications. The VRT protocol provides a variety of formatting options allowing the transport layer to be optimized for each application. The VITA 49.2 standard specifies the rules governing control packets.

Status: ANSI/VITA 49.2-2017 VITA Radio Transport (VRT) Standard for Electromagnetic Spectrum: Signals and Applications Standard has been ratified by ANSI. The standard is available for download by VITA members and is posted at the VITA Store for purchase by non-members.

VITA 51.4: Reliability Component Derating

Objective: The goal of this study group is to develop a new component derating standard.

Status: The study has been meeting to discuss the scope and outline potential sources of data for this activity.

VITA 57.4: FMC+

Objective: The goal is to develop a next-generation standard implementing a set of connectors to support higher-speed serial interfaces.

Status: The draft standard is under review by the working group. Recent work has added support for , conduction cooling, and addressed several mechanical clearance and mating compatibility issues. A new study group has been formed, VITA 57.5 Physical Tools to Aid in + Development, to define a set of development tools. Interested parties are invited to join this study group.

ANSI/VITA 65: OpenVPX Architectural Framework for VPX

Objective: The architectural framework specification is a living document that is regularly updated with new profile information and corrections. Added in this release is ANSI/VITA 65.1-2017 OpenVPX System Standard – Profile Tables that documents slot, backplane, and module profiles used in OpenVPX.

Status: ANSI/VITA 65.0-2017 OpenVPX Systems Standard and ANSI/VITA 65.1-2017 Profile Tables have been ratified by ANSI. The standard is available for download by VITA members and is posted at the VITA Store for purchase by non-members.

VITA 66.5: VPX: Optical Interconnect, Spring-Loaded Contact on Backplane

Objective: This document describes an open standard for configuration and interconnect within the structure of VITA 66.0 enabling an interface compatible with VITA 46 containing blind mate optical connectors with fixed contacts on the Plug-In Module and floating displacement on the backplane.

Status: The working group is developing the draft document.

VITA 67.3: VPX: Coaxial Interconnect, 6U, Four Position SMPM Configuration

Objective: This specification details the configuration and interconnect within the structure of VITA 67.0, enabling a 6U VPX interface containing multi-position blind mate connectors with up to four SMPM contacts.

Status: The document has been submitted for ANSI ballot.

VITA 68.2: VPX: Compliance Channel

Objective: This standard defines a VPX compliance channel including common backplane performance criteria required to support multiple fabric types across a range of defined baud rates. This allows backplane developers to design a backplane that supports required Bit Error Rates (BER) for multiple fabric types. This also allows module developers to design plug-in modules that are interoperable with other modules when used with a compliant backplane.

Status: The working group is updating the draft of this standard.


Objective: VNX describes a rugged small form factor subsystem intended to be rugged for deployed environments.

Status: The working group has approved this specification and has submitted for ANSI ballot. Several additional dot specifications have been introduced to expand the capability of VNX.

VITA 78.1: SpaceVPX Lite Systems

Objective: This document leverages the work done on ANSI/VITA 78 to create a specification with an emphasis on 3U module implementations. The most significant change from SpaceVPX is to shift the distribution of utility signals from the SpaceUM to the System Controller to allow a radial distribution of supply power to up to eight payload modules.

Status: The working group has developed a draft document of the specification that is currently under review.

VITA 84: Hardware Open System Technology (HOST) Study Group

Objective: The vision of this study group is to create a hardware technical reference framework for developing embedded computing systems through successful development of an overarching HOST strategy to maximize platform and system “openness,” modularity, interoperability, scalability, sustainability, and re-use.

Status: The HOST study group is actively reviewing the draft document and reviewing comments.

VITA 86: High Voltage Input Sealed Connector Power Supply

Objective: This standard defines an environmentally enhanced connector pair, which is compatible with the pinouts as defined in .0 for power supplies operating in harsh environments operating off of a high voltage input (270VDC). The connector pair features wider separation between input pins and a sealed connection.

Status: The working group is collecting inputs before developing a draft document.

Copies of all standards reaching ANSI recognition are available from the VITA online store ( For a more complete list of VITA standards and their status, go to